xfs: stop using q_core counters in the quota code

Add counter fields to the incore dquot, and use that instead of the ones
in qcore.  This eliminates a bunch of endian conversions and will
eventually allow us to remove qcore entirely.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>

fs/xfs/xfs_dquot.h

@@ -31,6 +31,9 @@ struct xfs_dquot_res {
 	/* Total resources allocated and reserved. */
 	xfs_qcnt_t		reserved;
 
+	/* Total resources allocated. */
+	xfs_qcnt_t		count;
+
 	/* Absolute and preferred limits. */
 	xfs_qcnt_t		hardlimit;
 	xfs_qcnt_t		softlimit;